Padlock.



P. S. WISEMAN.

PADLOCK.

(Application filed May 31 1899.)

(No Model.)

r mums perms co PHOTO-LUNG. WASHlNf-TON, u. c.

llnrrnn STATES PATENT FFICE.

PHILIP S. \VISEMAN, OF SPRINGFIELD, OIllO, ASSIGNOR OF THREPLFOURTIIS TO FRED COLBURN, JONATHAN S. HARSHMAN, AND DAVID C. WISEMAN, OF SAME PLACE.

PADLOCK.

SPECIFICATION forming part of Letters Patent No. 647,592, dated April 17, 1900. Application filed May 31, 1899. Serial No. 718,882- (No morleLi T aZZ whom it may concern: casing A. Between the casings A and B is Be it known that I, PHILIP S. WISEMAN, pivotally secured one end of a lock-bar F, as a citizen of the United States, residing at shown at G, in such a manner that there is Springfield, in the county of Clark and State no space between them, particularly where 55 of Ohio, have invented certain new and usethey meet along the upper edges, so that snow ful Improvements in Padlocks, of which the and water are prevented from running into following is a specification, reference being the lock atsuch opening. Near the other end had therein to the accompanying drawings. of thislock-baris formed a shoulder, as shown This invention relates to certain new and at H, which projects outward flush with the 60 1o useful improvements in padlocks. casing all around the lock-bar. Below this The object of this invention is to provide shoulder the lock-bar is formed into a hook, a plurality of peculiarly-constructed lockingas shown at I, which extends through a hole dogs so arranged with respect to each other or opening in the casing, as shown at J. This that the padlock will remain locked until all hook is adapted to be engaged by suitable 65 the locking-dogs are operated simultaneously, dogs, hereinafter referred to. Referring whereby the padlock cannot be opened by any again to the lockbar, it will be observed that means that will not act simultaneously on all it extends backward from the pivot G, as of said dogs, thus preventing the picking shown at K, and is cut away, as shown at L. of the lock. A spring M is adapted to press at one end 70 My invention also relates to the exterior against the projection K and at its other end construction of the padlock, whereby water extends between the flange D of the casing and snow are prevented from obtaining an and a stud N and normally acts to throw the entrance into the same, so that it will not be locking-barout of engagement with the lock prevented from readily unlocking. ing-dogs when they are released therefrom, 75 My invention also relates to details of conas illustrated in dotted lines in Fig. 2. The struction hereinafter appearing and particusides of the casing are scalloped out, as shown larly pointed out in the claims. at O, and have their edges inturned to meet In the accompanying drawings, on which each other, such inturned edges and curved like reference letters and numerals indicate locking-bar forming a hole or opening, as in- 80 0 corresponding parts, Figure l is a side elevadicated at I, for the reception of a staple,

tion of my improved padlock complete. Fig. chain, &c. 2 is a similar View to Fig. l with one side of Referring now to the locking-dogs and the the casing removed Fig. 3, an edge view also manner in which they engage with the lockshowing one side of the casing removed; Fig. ing-bar and are released therefrom, it will be 8 5 4., asimilar view to Fig. 2, showinga modified seen that upon a stud or rivet R are mounted form of guiding-plates for the keyway; Fig. 5, in this instance three dogs S, T, and U, rea sectional view on the line rcxof Fig. 2; Fig. spectively. The dogs S and U each engage 6, a detail perspective View of the blind dog, with the toothed projection from the lockand Fig. 7 a detail view illustrating the key ing-bar F and hold such bar in locked po- 0 for unlocking my improved padlock. sition. Thesedogs are normally held in this The letter A represents one side of a suitlocking position by means of springs V, such' able shell or casing, while the letter B represprings being held in position by studs V sents the opposite side. These sides are so and Z, respectively, the stud W acting as formed with respect to each other that they a fulcrum for such springs. Between the 5 4 5 may be fitted one upon the other, so as to form a dogs S and U is mounted a blind dog T, which complete housing for theinterior of the padacts to separate the dogs from each other, lock. The side I3 is turned up at its lower so that it will not be so easy to operate both edge, as shown at C, to form the lower edge of them at once in a manner presently to of the casing and is also turned up, as shown appear, and which also carries a plate 2, car- I00 at D, to form one side edge, the other side ried at one end of an arm 3, projecting from edge being formed by a flange E from the said dog. .It will be observed that this arm.

is cut out, as shown at 4. This is for the purpose of permitting the plate 2 to spring backward sufficiently to clear the key-passage 5, hereinafter referred to. Each of the locking-dogs has an arm 6 and a stud '7 projecting from said arms, such stud and arm being slightly back of the plate 2 on the blind dog. Releasing-arms 8 also extend from the locking-dogs and are provided with notches 9. An operating-arm 10 also projects from the blind dog between the arms 8 of the lockingdogs. All of these latter arms normally stand in front of the key-passage 5, and should a piece of metal be'pressed against them other than the proper key the projection 7 from the locking-dogs and the plate 2 from the blind dog will strike such piece of metal and prevent it from being further pressed through the key-passage 6 and preventing the locking-dogs from disengagement with the locking-bar; but when the proper key, such as illustrated in Fig. 7, is inserted in the keypassage the bifurcated end will fit over the blind dog and simply engage with the lockingdogs. This will tend to throw the projection 7 into engagement with the key 11; but such key is notched on either side, as shown at 12,

and the projections 7 are permitted to extend within said notches, which will permit the locking-dogs to disengage from the lockingbar. slightly released on the locking-dogs their springsV will instantly throw them into or toward locking position. This movement will withdraw the projections 7 from the notches 12 in the key, so that the key may be readily withdrawn from the look. In order to provide guides for the key, projections 13 and 14 extend from the casing A. Another method of forming a key-guide is that shown in Fig. 6, where a pair of guides 15 project from the arm 10 of the blind dog T opposite the keypassage 5.

Referring again to the pin Z, it will be un- As soon as the pressure of the key is derstood that it also acts as a stop to limit the backward movement of the lower arms of the locking and blind dogs. Thus the springs V will not be permitted to throw the locking- .dogs to such a position that when the key is inserted it will not act upon them, which might be the case if they were swung too far about their pivot R.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a padlock, the combination with a casing, of a lock-bar pivoted at one end in said casing and having its other end adapted to be locked therein, a pair of locking-dogs adapted to' engage with said locking-bar to lock it, ablind dog between said locking-dogs, a stud to limit the movement of said lockingdogs in one direction and springs to limit their movement in the opposite direction, a plate carried by an arm projecting from said blind dog, a projection extending from each of said locking-dogs near said plate, an unlocking-arm extending from each of said dogs, a key adapted to engage with each 0E said unlocking-arms to throw said dogs out of locking engagement with said locking-bar and at the same time throw said projections across the path of said key, substantially as shown and described.

2. In a padlock, the combination with. a shell or casing, of a blind dog mountedtherein, an arm projecting from said dog, a plate secured to said arm, an operating extension also projecting from said dog, and a pair of guides at right angles to the plane of said dog and having a space between them, substantially as shown and described.

In testimony whereof I affix my signature in'presence of two witnesses.

PHILIP S. WISEMAN.

Witnesses:

B. B. ESTERLINE, W. M. MONAIR. 

